Haven't posted here for about 8 years - but - surprise - I have a Problem!

So, the ageing PA3X is fading slowly but surely - anyone have this problem before:

*The Maxx Audio EQ settings I set up (I usually Boost the Bass) do NOT stay set!*

Is this a known software bug? I never noticed it before and I'm damn sure it's only started happening in the last few months. ANY EQ settings I press/change just revert back to original after 30 seconds or so - What the Hell???

lil help please guys? Thank you for any advice - hope you're all well!